PR comments

Signed-off-by: Bob Shannon <bshannon@palantir.com>

.travis.yml

@@ -2,8 +2,9 @@ sudo: false
 language: go
 
 go:
- - 1.10.x
+- 1.7.x
- - 1.x
+- 1.8.x
+- 1.9.x
 
 script:
  - go test -short ./...

api/prometheus/v1/api.go

@@ -22,13 +22,11 @@ import (
 	"encoding/json"
 	"fmt"
 	"net/http"
-	"net/url"
 	"strconv"
 	"time"
 
 	"github.com/prometheus/client_golang/api"
 	"github.com/prometheus/common/model"
-	"github.com/prometheus/prometheus/scrape"
 )
 
 const (
@@ -52,13 +50,21 @@ const (
 // ErrorType models the different API error types.
 type ErrorType string
 
-// Possible values for ErrorType.
+// HealthStatus models the health status of a scrape target.
+type HealthStatus string
+
 const (
+	// Possible values for ErrorType.
 	ErrBadData     ErrorType = "bad_data"
 	ErrTimeout               = "timeout"
 	ErrCanceled              = "canceled"
 	ErrExec                  = "execution"
 	ErrBadResponse           = "bad_response"
+
+	// Possible values for HealthStatus.
+	HealthGood    HealthStatus = "up"
+	HealthUnknown HealthStatus = "unknown"
+	HealthBad     HealthStatus = "down"
 )
 
 // Error is an error returned by the API.
@@ -114,7 +120,7 @@ type AlertManagersResult struct {
 
 // AlertManager models a configured Alert Manager.
 type AlertManager struct {
-	URL *url.URL `json:"url"`
+	URL string `json:"url"`
 }
 
 // ConfigResult contains the result from querying the config endpoint.
@@ -123,9 +129,7 @@ type ConfigResult struct {
 }
 
 // FlagsResult contains the result from querying the flag endpoint.
-type FlagsResult struct {
+type FlagsResult map[string]string
-	Flags Flags
-}
 
 // Flags models a set of flags that Prometheus is configured with.
 type Flags map[string]string
@@ -145,10 +149,10 @@ type TargetsResult struct {
 type ActiveTarget struct {
 	DiscoveredLabels model.LabelSet `json:"discoveredLabels"`
 	Labels           model.LabelSet `json:"labels"`
-	ScrapeURL        *url.URL            `json:"scrapeUrl"`
+	ScrapeURL        string         `json:"scrapeUrl"`
 	LastError        string         `json:"lastError"`
 	LastScrape       time.Time      `json:"lastScrape"`
-	Health           scrape.TargetHealth `json:"health"`
+	Health           HealthStatus   `json:"health"`
 }
 
 // DroppedTarget models a dropped Prometheus scrape target.
@@ -165,54 +169,6 @@ type queryResult struct {
 	v model.Value
 }
 
-func (a *ActiveTarget) UnmarshalJSON(b []byte) error {
-	v := struct {
-		DiscoveredLabels model.LabelSet      `json:"discoveredLabels"`
-		Labels           model.LabelSet      `json:"labels"`
-		ScrapeURL        string              `json:"scrapeUrl"`
-		LastError        string              `json:"lastError"`
-		LastScrape       time.Time           `json:"lastScrape"`
-		Health           scrape.TargetHealth `json:"health"`
-	}{}
-
-	err := json.Unmarshal(b, &v)
-	if err != nil {
-		return err
-	}
-
-	url, err := url.Parse(v.ScrapeURL)
-
-	a.DiscoveredLabels = v.DiscoveredLabels
-	a.Labels = v.Labels
-	a.ScrapeURL = url
-	a.LastScrape = v.LastScrape
-	a.Health = v.Health
-	a.LastError = v.LastError
-
-	return err
-}
-
-func (a *AlertManager) UnmarshalJSON(b []byte) error {
-	var v map[string]string
-
-	err := json.Unmarshal(b, &v)
-	if err != nil {
-		return err
-	}
-
-	url, err := url.Parse(v["url"])
-	a.URL = url
-	return err
-}
-
-func (f *FlagsResult) UnmarshalJSON(b []byte) error {
-	var v map[string]string
-
-	err := json.Unmarshal(b, &v)
-	f.Flags = v
-	return err
-}
-
 func (qr *queryResult) UnmarshalJSON(b []byte) error {
 	v := struct {
 		Type   model.ValueType `json:"resultType"`

api/prometheus/v1/api_test.go

@@ -27,7 +27,6 @@ import (
 	"time"
 
 	"github.com/prometheus/common/model"
-	"github.com/prometheus/prometheus/scrape"
 )
 
 type apiTest struct {
@@ -89,11 +88,6 @@ func TestAPIs(t *testing.T) {
 
 	testTime := time.Now()
 
-	testURL, err := url.Parse("http://127.0.0.1:9090/api/v1/alerts")
-	if err != nil {
-		t.Errorf("Failed to initialize test URL.")
-	}
-
 	client := &apiTestClient{T: t}
 
 	promAPI := &httpAPI{
@@ -372,7 +366,6 @@ func TestAPIs(t *testing.T) {
 				"query.max-concurrency":                    "20",
 			},
 			res: FlagsResult{
-				Flags{
 				"alertmanager.notification-queue-capacity": "10000",
 				"alertmanager.timeout":                     "10s",
 				"log.level":                                "info",
@@ -380,7 +373,6 @@ func TestAPIs(t *testing.T) {
 				"query.max-concurrency":                    "20",
 			},
 		},
-		},
 
 		{
 			do:        doFlags(),
@@ -397,24 +389,24 @@ func TestAPIs(t *testing.T) {
 			inRes: map[string]interface{}{
 				"activeAlertManagers": []map[string]string{
 					{
-						"url": testURL.String(),
+						"url": "http://127.0.0.1:9091/api/v1/alerts",
 					},
 				},
 				"droppedAlertManagers": []map[string]string{
 					{
-						"url": testURL.String(),
+						"url": "http://127.0.0.1:9092/api/v1/alerts",
 					},
 				},
 			},
 			res: AlertManagersResult{
 				Active: []AlertManager{
 					{
-						URL: testURL,
+						URL: "http://127.0.0.1:9091/api/v1/alerts",
 					},
 				},
 				Dropped: []AlertManager{
 					{
-						URL: testURL,
+						URL: "http://127.0.0.1:9092/api/v1/alerts",
 					},
 				},
 			},
@@ -445,7 +437,7 @@ func TestAPIs(t *testing.T) {
 							"instance": "127.0.0.1:9090",
 							"job":      "prometheus",
 						},
-						"scrapeUrl":  testURL.String(),
+						"scrapeUrl":  "http://127.0.0.1:9090",
 						"lastError":  "error while scraping target",
 						"lastScrape": testTime.UTC().Format(time.RFC3339Nano),
 						"health":     "up",
@@ -475,10 +467,10 @@ func TestAPIs(t *testing.T) {
 							"instance": "127.0.0.1:9090",
 							"job":      "prometheus",
 						},
-						ScrapeURL:  testURL,
+						ScrapeURL:  "http://127.0.0.1:9090",
 						LastError:  "error while scraping target",
 						LastScrape: testTime.UTC(),
-						Health:     scrape.HealthGood,
+						Health:     HealthGood,
 					},
 				},
 				Dropped: []DroppedTarget{